Home / 646,742,421.60-970,121,926.80-215,920,917.60

Finding the Fourth Proportional to 646,742,421.60, 970,121,926.80 and 215,920,917.60

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Solution

The fourth proportional to 646,742,421.60, 970,121,926.80 and 215,920,917.60 is: 323,884,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,742,421.60 : 970,121,926.80 = 215,920,917.60 : x
  2. Step 2: Convert to fraction form
    646,742,421.60/970,121,926.80 = 215,920,917.60/x
  3. Step 3: Cross multiply
    646,742,421.60x = 970,121,926.80 × 215,920,917.60
  4. Step 4: Simplify right side
    646,742,421.60x = 209,469,616,618,536,000
  5. Step 5: Solve for x
    x = 209,469,616,618,536,000/646,742,421.60
  6. Step 6: Final answer
    x = 323,884,145.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.